Number your blocks from 1 to 8. Don't forget which one is which!
After you hit 'submit' you will be told how to place your blocks and the colors on the solution cube.
The positions are given in this order:
[bottom front left, bottom front right, bottom back right, bottom back left, top front left, top front right, top back right, top back left]
Once you have your blocks in the proper positions, flip them around to make the colors align with those of the given solution.
Enter the colors of each block like this:
top bottom front right back left
(for example: red green blue orange yellow purple)
Note: it doesn't matter how you orient the blocks.