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