You might just simply download and unzip the file again. These 5 steps take about 1 or 2 minutes.
1) Open a console and navigate to the path you'd like to put electrum in.
2) Download electrum with this command:
wget https://download.electrum.org/3.2.2/Electrum-3.2.2.tar.gz
3) Unzip the file:
tar -xvzf Electrum-3.2.2.tar.gz
4) Enter the directory:
cd Electrum-3.2.2/
5) Finally run electrum:
python3.5 electrum