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