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