There is a Microsoft Office addin, https://appsource.microsoft.com/en-us/product/office/wa200000113 , that works with Word, Excel and Powerpoint, both online and desktop back to 2013.


With the addin installed, activate it in the tool and you'll see an option to select a draw.io file from the local device, Google Drive or OneDrive. When selected, a PNG representation of that draw.io file will be inserted into your Office document.