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