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