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