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