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