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