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