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)(20,34)(21,27)(22,40)(23,44)(24,29)(26,36)(28,42)(30,56)(31,47)(32,48)(33,63)(35,65)(37,66)(38,50)(39,55)(41,51)(43,69)(45,54)(46,59)(49,61)(52,70)(53,67)(57,75)(58,77)(60,80)(62,73)(64,76)(68,74)(71,78)(72,79) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,13)(8,9)(12,16)(14,15)(17,19)(18,25)(20,30)(21,38)(22,33)(23,31)(24,32)(26,46)(27,50)(28,49)(29,48)(34,56)(35,60)(36,59)(37,58)(39,68)(40,63)(41,64)(42,61)(43,62)(44,47)(45,57)(51,76)(52,71)(53,72)(54,75)(55,74)(65,80)(66,77)(67,79)(69,73)(70,78) involution — undirected(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(17,20)(18,26)(19,30)(21,35)(22,41)(23,45)(24,37)(25,46)(27,51)(28,54)(29,53)(31,57)(32,58)(33,64)(34,40)(36,42)(38,60)(39,67)(43,70)(44,52)(47,71)(48,72)(49,75)(50,76)(55,65)(56,63)(59,61)(62,78)(66,69)(68,79)(73,77)(74,80)(3,11)(6,9)(10,16)(13,15)(17,21,24,23)(18,27,29,44)(19,31,32,38)(20,35,37,45)(22,39,43,42)(25,47,48,50)(26,51,53,52)(28,40,55,69)(30,57,58,60)(33,61,62,68)(34,65,66,54)(36,41,67,70)(46,71,72,76)(49,73,74,63)(56,75,77,80)(59,78,79,64)(2,8)(6,9)(7,14)(13,15)(19,32)(25,48)(30,58)(31,38)(33,62)(46,72)(47,50)(49,74)(56,77)(57,60)(59,79)(61,68)(63,73)(64,78)(71,76)(75,80) involution — undirectedA 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.