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