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