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