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