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)(17,18,22,25)(19,26,28,31)(20,24,21,29)(23,30,32,27)(33,34,37,40)(35,41,43,48)(36,44,46,39)(38,45,47,42)(1,3)(2,6)(4,13)(5,10)(7,15)(8,16)(9,12)(11,14)(17,19,22,28)(18,23,25,32)(20,27,21,30)(24,31,29,26)(17,18)(19,23)(20,24)(21,29)(22,25)(26,30)(27,31)(28,32)(33,35,37,43)(34,38,40,47)(36,45,46,42)(39,48,44,41)(2,7)(3,10)(8,12)(11,13)(17,20,22,21)(18,24,25,29)(19,27,28,30)(23,31,32,26)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.