It depends what they are making the golems out of. Essentially though I picture two main rooms - the workshop where they are assembled and the ritual room where they are enchanted/brought to life.

If the golems are constructed from wood or stone, the workshop will resemble a carpenter or masons workshop, with associated rooms to store stone and timber. If they are bronze or iron, then they will probably be cast in big sand molds There will be some kind of furnace and some big molds (or multiple molds if it is multipart). So it's going to resemble a big ironworks. You might even have the original clay sculpts used to create the molds.

As for the enchanting room - well that is completely open I guess.