IIRC an old Cubase manual, 32 bit recording was enabled to allow for Broadcast Wave format. But otherwise makes no difference to the sound of the file.
In fact, it’s a common myth that 24 bit “sounds better” than 16 bit. 24 bit simply allows for more headroom so engineers can record incoming signals at lower levels and still have a nice signal-to-noise ratio. Previously, with older 16-bit methods, you’d have to ride the signal pretty high and risk “digital clipping.” I point this out, as this prevailing myth is likely what lead the OP to ask his question in the first place.
Cheers.