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