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