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