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