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