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