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