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