No one was in favor of absolute liberty at the end of the American Revolution. After all, absolute liberty would essentially mean no rules governing society and no one wanted that.
Of the major political groups in existence at the end of the Revolution, it would have been the Antifederalists who favored more absolute liberty than did the Federalists. The Antifederalists were much more worried about the government infinging on individual freedoms. They wanted more liberty while the Federalists were more interested in order and economic growth.
Therefore, the most likely answer to this is that it was the Antifederalists who wanted more liberty even though they did not truly advocate absolute liberty.