I think it would actually look ridiculously similar.

The top reasons we see light are because it's reflecting, refracting, or being radiated by an object.

So unless there are loads of objects that exist that we cannot see, things ought to look rather similar.

Each physical object interacts with the waves that move past it. If an object is present, it will change the movements of all types of electromagnetic waves, and possibly waves of other types as well. It's objects we see when we look at light, and thus all things that are real can be seen due to their interaction on the surrounding waves.