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