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