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