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