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