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