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