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