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