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