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