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