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