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