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