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