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