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