Is there an easy way to print an image and its metadata together?

There is a huge amount of metadata, if it's just one field to be displayed as a Caption under the pictures (Contact Sheet) you could use..

http://ps-scripts.sourceforge.net/ContactSheetX/csx.html

If you want metadata as text on the picture this would be done in Photoshop, again it depends on what metadata is required, Picture Processor allows certain metadata to be put onto a document.

http://www.scriptsrus.talktalk.net/PP.htm

Otherwise you would have to create a custom script to do what you require.