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