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