That appears to be a 1 HP full rated motor.

I can only assume that this is because of the increase in dropped leaves into my
pool and the need to run the pool vacuum constantly.
Switching to a VS or two speed may not help you much if your pool cleaner requires a higher flow rate to work properly. However, a VS would allow you to "optimize" for the lowest flow rate possible although you may not fully realize the full cost savings because of the cleaner.

Without knowing your current equipment list (including cleaner, filter and controller) and assuming you have no high flow rate needs, the Hayward MaxFlo VS and the Pentair SuperFlo VS are two very good low end VS pumps at a good price point. However, if you have a separate controller you want to interface the pump with, this suggestion might change.

Another option would be to just swap out your current motor with a two speed motor. This is usually a cheaper option but you may not be able to run the cleaner on low speed.