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