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