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