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