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