One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,7)(5,8)(6,11)(10,15)(12,14)(13,16)(17,18)(19,25)(20,27)(21,28)(22,41)(23,45)(24,30)(26,37)(29,43)(31,47)(32,48)(33,63)(34,67)(35,50)(36,54)(38,56)(39,55)(40,57)(42,51)(44,70)(46,59)(49,65)(52,69)(53,68)(58,74)(60,76)(61,75)(62,77)(64,71)(66,80)(72,79)(73,78) involution — undirected(1,3,5,11)(2,6,8,9)(4,12,13,10)(7,15,16,14)(17,19,24,35)(18,25,30,50)(20,31,38,60)(21,32,23,34)(22,33,44,66)(26,46,53,73)(27,47,56,76)(28,48,45,67)(29,49,57,77)(36,58,39,61)(37,59,68,78)(40,62,43,65)(41,63,70,80)(42,64,69,79)(51,71,52,72)(54,74,55,75)(1,4,5,13)(2,7,8,16)(3,10,11,12)(6,14,9,15)(17,20)(18,26)(19,31)(21,36)(22,42)(23,39)(24,38)(25,46)(27,41)(28,51)(29,55)(30,53)(32,58)(33,64)(34,61)(35,60)(37,43)(40,68)(44,69)(45,52)(47,63)(48,71)(49,75)(50,73)(54,57)(56,70)(59,65)(62,78)(66,79)(67,72)(74,77)(76,80)(2,8)(6,9)(7,16)(14,15)(17,20)(18,27)(19,31)(21,39)(22,37)(23,36)(24,38)(25,47)(26,41)(28,55)(29,51)(30,56)(32,61)(33,59)(34,58)(35,60)(40,69)(42,43)(44,68)(45,54)(46,63)(48,75)(49,71)(50,76)(52,57)(53,70)(62,79)(64,65)(66,78)(67,74)(72,77)(73,80) involution — undirected(17,21,24,23)(18,28,30,45)(19,32,35,34)(20,36,38,39)(22,40,44,43)(25,48,50,67)(26,51,53,52)(27,54,56,55)(29,41,57,70)(31,58,60,61)(33,62,66,65)(37,42,68,69)(46,71,73,72)(47,74,76,75)(49,63,77,80)(59,64,78,79)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.