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