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