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