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