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