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