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