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