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