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