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