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