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