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