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