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