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