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