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