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