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