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