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