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