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