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