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