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