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