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