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