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