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