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