For a 32 position switch, you will be using only 31 resistors. The extreme positions will be wired directly to 5V and 0V. So position 0 should read pretty much exactly zero and position 31 should read almost exactly 1023. Position 1 should read 10231/31=33, position 30 should read 102330/31=990 and so on. But these (1-30 positions) are subject to the inaccuracies of the resistors. So the expected values should be 0, 33, 66, 99... 990, 1023.