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