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