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