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