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