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