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