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