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