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