One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,13)(4,17,20,9)(5,12)(6,10)(7,11)(8,15)(14,29,31,25)(16,27)(18,32,30,23)(19,26,22,28)(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)(1,3,5,15,7,16,6,21)(2,8,10,13,11,24,12,27)(4,18,19,14,20,30,22,31)(9,25,26,23,17,29,28,32)(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)(1,4,7,20)(2,9,11,17)(3,14,16,31)(5,19,6,22)(8,23,24,32)(10,26,12,28)(13,29,27,25)(15,30,21,18)(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.