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