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