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)(20,24,32,39)(22,26,33,40)(28,41,34,36)(30,43,45,37)(31,38,35,42)(44,48,46,47)(1,2,4,5)(3,6,7,8)(9,11,12,16)(10,13,14,15)(19,28)(20,31)(22,33)(23,36)(24,38)(26,40)(27,41)(29,34)(32,35)(39,42)(44,46)(47,48)(10,14)(13,15)(17,19,21,29)(18,23,25,27)(20,30,32,45)(22,34,33,28)(24,37,39,43)(26,41,40,36)(31,44,35,46)(38,47,42,48)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(19,29)(23,27)(28,34)(30,45)(36,41)(37,43)(44,46)(47,48)(2,5)(6,8)(11,16)(13,15)(17,20,21,32)(18,24,25,39)(19,30,29,45)(22,35,33,31)(23,37,27,43)(26,42,40,38)(28,44,34,46)(36,47,41,48)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.