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