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