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