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