The images are in the starting position for each puzzle.
On the top right of each puzzle there are white dots. These indicate if a switch is open or closed.
A dot with an “x” indicates the switch is closed, no “x” means the switch is open.
It is possible for a switch puzzle to be rotated so if you see a configuration not listed it may be rotated.
Thank you to -aRTY- on reddit for making the cheat sheet and allowing us to post it here.