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