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