It may help to show your proc tree code. Better would be to include a data step which reproduces some example data.
What other instructions were provided? If none, show who ever requested this the result and ask them if that is the desired output. Perhaps you should share all the "instructions" you were given.
How do you intend to interpret the graph without any axis labels?
And why would there be "thousands of labels" for each observation? The tree should show one point fore each value of a single variable. It sounds like perhaps you have a bad data model or structure to begin with.