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