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