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