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