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