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