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