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