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