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