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