Every CFDI you stamp in Cord automatically generates its PDF (printable version) and its XML (the actual tax document — the one your accountant needs). Outside Mexico, every invoice generates its PDF the same way; the XML is specific to the CFDI.
Where to find them
Go to Invoices in the main menu and open the invoice you need. Its detail page has the PDF and XML links ready to download.
You can also reach the same file from the detail page of the quote that generated that invoice, in the tax documents section.