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