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