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