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