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