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