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