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