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