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