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)(17,18,23,28,24,29,22,39)(19,30,33,42,34,48,32,25)(20,26,36,44,37,45,40,41)(21,27,31,47,38,43,35,46)(9,10)(11,15)(12,14)(13,16)(17,19,24,34)(18,25,29,42)(20,35,37,31)(21,36,38,40)(22,33,23,32)(26,43,45,27)(28,48,39,30)(41,46,44,47)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,20,24,37)(18,26,29,45)(19,31,34,35)(21,33,38,32)(22,40,23,36)(25,27,42,43)(28,44,39,41)(30,47,48,46)(11,16)(13,15)(17,21,22,35,24,38,23,31)(18,27,39,46,29,43,28,47)(19,20,32,40,34,37,33,36)(25,41,48,45,42,44,30,26)(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,22,24,23)(18,28,29,39)(19,32,34,33)(20,36,37,40)(21,31,38,35)(25,30,42,48)(26,41,45,44)(27,46,43,47)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.