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