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