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