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)(35,45)(36,41)(37,40)(38,43)(39,47)(42,52)(44,51)(46,54)(48,62)(49,58)(50,56)(53,63)(55,61)(57,64)(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)(33,35)(34,39)(36,47)(37,48)(38,46)(40,55)(41,45)(42,53)(43,58)(44,54)(49,51)(50,61)(52,60)(56,62)(57,59)(63,64)(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)(34,40)(35,46)(37,52)(38,51)(39,53)(41,56)(42,44)(43,57)(45,59)(47,49)(48,61)(50,64)(54,62)(55,58)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.