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