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