The address you generated on bitaddress.org is a Bitcoin address, not a Litecoin or other cryptocurrency address.

You can use the following website to generate paper wallets for Litecoin:
https://liteaddress.org/

Keep in mind that when using these websites you should be sure that the code has not been tampered with. An attacker or a bad admin could change the javascript and insert a faulty RNG or have it automatically send all the private keys back to the server without your knowledge. Malware on your pc may be able to steal your private key when your generating it too.