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