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