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)(19,24)(20,33)(21,39)(22,27)(23,28)(25,36)(26,31)(29,40)(30,47)(32,45)(34,43)(35,41)(37,46)(38,44)(42,48)(1,3,5,4)(2,6,8,7)(9,11,12,15)(10,13,14,16)(17,19,22,21)(18,24,27,39)(20,34,36,48)(23,32,40,31)(25,42,33,43)(26,28,45,29)(30,38,35,37)(41,46,47,44)(1,3,5,4)(2,7,8,6)(10,14)(13,16)(17,20)(18,25)(19,30)(21,35)(22,36)(23,38)(24,41)(26,43)(27,33)(28,46)(29,44)(31,48)(32,34)(37,40)(39,47)(42,45)(1,4,5,3)(2,6,8,7)(17,21,22,19)(18,26,27,45)(20,35,36,30)(23,32,40,31)(24,28,39,29)(25,43,33,42)(34,37,48,38)(41,46,47,44)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.