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