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