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