I think the press sheets were far larger than 32 cards. While a different size in terms of the individual cards, this 51 Bowman Baseball uncut sheet shows 288 cards in a 16x18 array, with 72 different cards repeated four times. The 32 or 36 card panels seem to be how Bowman cut them down for final cutting and packaging. It's too big to upload here but this link works:
https://sports.ha.com/itm/baseball-c...umbnail-071515