To make a graph on Excel, you first need to create a table with the data that you want to graph. Once the table is created, select the data that you want to graph and click on the "Insert" tab. Then, select "Chart" and choose the type of graph that you want to create. Excel will automatically create the graph based on the data that you have selected. You can then customize the graph by changing the colors, the type of chart, and the layout.