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