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