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