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