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