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