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