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