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