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