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