One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,12,7,10,5,11)(3,13,16,24,17,8,15,25)(4,18,20,27,22,28,21,9)(14,30,31,23,32,26,19,29)(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)(1,3,7,17)(2,8,10,13)(4,19,22,31)(5,16,6,15)(9,26,27,30)(11,25,12,24)(14,20,32,21)(18,23,28,29)(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)(15,31)(16,19)(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.