The allied leaders' goals can be separated into at least three categories. There were European leaders' goals to punish Germany and to prevent it from being a threat again. There was also President Wilson's goal of making a more just international system that would remove the causes of war.
All of these were seen in various parts of the Treaty of Versaille. To punish Germany, there was the war guilt clause and the imposition of reparations. Its overseas territories were also taken away. To keep Germany from becoming powerful again there was the demilitarization of the Rhineland and the strict restrictions on the size of the German military and what sorts of weapons it could have (no submarines, no air force). For Wilson, there was the League of Nations and the creation of some new countries out of the Austro-Hungarian Empire.