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