Ray, everyone has access to the layout sheets all you have to do is ask the
Pro Shop when before they drill the ball up, or if you bought it online the sheet should be in the box the ball came in. Many times you can find them on the manufacturers website as well.
As for the diagrams showing a balls reaction, like GP said, it's more to compare how the different balls react in comparison to each other. For example, arc versus skid/flip. They don't represent the ideal line for that ball.