Click the File tab.
In the side bar, click Print.
A preview of the diagram is shown, along with a panel for setting printing options.
To pan around the diagram page, click and drag the page. If your mouse has a scroll wheel, you can use it to zoom in and out.
To switch pages in the preview window, use the page tool in the toolbar below the print preview window, on the left side. On the right side of the toolbar are tools for showing and hiding page breaks and for changing the zoom amount.