There is a panel leaning on the wall. It gives hints on which to use. = gen 1, blue.. = gen 2, green... = gen 3, orange... + _ = precursor, purple :)
Thanks for the reply, although even with the clue about the puzzle, I still can't get it in the correct order. That's why it would be easier to complete it with a reference image.
I have the same problem too; no matter how much I look at the track, I don't understand anything. Thinking about it so much even gave me a migraine.