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