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