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