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