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