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