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)(17,18,21,25)(19,27,28,23)(20,31,33,24)(22,26,34,39)(29,36,43,41)(30,42,44,37)(32,40,35,38)(45,47,46,48)(2,6)(7,8)(9,11,12,16)(10,13,14,15)(19,28)(20,32)(22,34)(23,27)(24,38)(26,39)(29,45)(31,40)(33,35)(36,47)(41,48)(43,46)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,19,21,28)(18,23,25,27)(20,29,33,43)(22,30,34,44)(24,36,31,41)(26,37,39,42)(32,46,35,45)(38,48,40,47)(10,14)(13,15)(17,20,21,33)(18,24,25,31)(19,29,28,43)(22,35,34,32)(23,36,27,41)(26,40,39,38)(30,45,44,46)(37,47,42,48)(1,4,5,3)(2,7,6,8)(10,14)(13,15)(19,28)(23,27)(29,43)(30,44)(36,41)(37,42)(45,46)(47,48)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.