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