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