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