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