After downloading the file from http://files.salome-platform.org/Salome/Salome8.3.0/SALOME-8.3.0-CO7.tgz.
The script is as following
sudo yum install freeglut atlas mesa-libGLU -y
cd /opt/
tar zxf ~/Downloads/SALOME-8.3.0-CO7.tgz ./
echo "alias salome830='/opt/SALOME-8.3.0-CO7/salome'" >> ~/.bashrc
. ~/.bashrc
salome830