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