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