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