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