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