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