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