It isn't possible to export the org chart as it appears in Sage HR. However, you can export it into Excel.
Click your name in the top right-hand corner, then click Settings.
On the General settings menu, click Employee data.
Click Org Chart.
To change an employee's direct manager, click the pencil icon ✏️.
Scroll down to the bottom, then click Export
An Excel file downloads onto your computer, which you can then open.
In this spreadsheet you can see who reports to who.
📌TIP: If you have assigned an Employee # to your employees, you could use Excel functionality and use the data to create your own visual Org Chart.