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