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