Your Excel sheet does not have the data, but here is an approach that should work.
Go to Graph Builder.
Drag your X variable to the X zone.
Drag your Y variable to the Y zone.
Drag your Label variable to the Overlay zone.
This should give you a scatterplot with different colors for each value of the Label variable.
Now click on the Graph element for the regression line.
You can then modify what is displayed by looking at the regression line options to the left of the graph.
Here is an example using the Big Class data.
Dan Obermiller