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