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