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