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