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