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