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