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