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