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