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