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