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