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