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