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