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