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