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