When you are logged into your SS and viewing it, go to the SS toolbar and click on File. Then choose Print. A box will appear. You can then select whatever option you need. Then click on the blue Print button at the bottom of the box.
An alternative way is to go to File then choose Download As. Choose your option (Excel, PDF, etc). A box will appear asking if you want to Save the file or Open it. Choose Open. When your SS opens up, you can then print it directly from the program. PDF is probably the best option since you won't lose any of the color coding.
Some people here just email their vet the link to the SS.