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