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