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