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