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