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