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