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)(17,18,22,27,23,26,21,37)(19,28,32,39,31,43,30,24)(20,33,35,41,36,25,34,40)(29,42,46,38,45,48,44,47)(1,3,5,12,6,13,4,11)(2,7,8,10,9,15,14,16)(17,19)(18,24,26,39)(20,29)(21,30)(22,32)(23,31)(25,38,33,47)(27,28,37,43)(34,44)(35,46)(36,45)(40,48,41,42)(1,4,6,5)(2,8,9,14)(3,11,13,12)(7,10,15,16)(17,20,23,36)(18,25,26,33)(19,29,31,45)(21,35,22,34)(24,38,39,47)(27,41,37,40)(28,42,43,48)(30,46,32,44)(1,4,6,5)(2,8,9,14)(3,11,13,12)(7,10,15,16)(18,26)(24,39)(25,33)(27,37)(28,43)(38,47)(40,41)(42,48)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.