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)(17,18,21,25)(19,23,29,40)(20,31,34,24)(22,26,36,45)(27,47,48,38)(28,39,30,41)(32,43,33,42)(35,46,37,44)(1,3,5,4)(2,6,8,7)(17,19)(18,23)(20,32)(21,29)(22,28)(24,42)(25,40)(26,39)(27,35)(30,36)(31,43)(33,34)(37,48)(38,44)(41,45)(46,47)(10,13)(14,16)(17,20,21,34)(18,24,25,31)(19,27,29,48)(22,37,36,35)(23,38,40,47)(26,46,45,44)(28,32,30,33)(39,42,41,43)(1,3,5,4)(2,7,8,6)(9,11,12,15)(10,14,13,16)(17,19,21,29)(18,23,25,40)(20,33,34,32)(22,28,36,30)(24,43,31,42)(26,39,45,41)(27,35,48,37)(38,44,47,46)(1,4,5,3)(2,6,8,7)(19,28)(22,36)(23,39)(26,45)(27,32)(29,30)(33,48)(35,37)(38,42)(40,41)(43,47)(44,46)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.