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