You can switch between the different structural representations of a given fullerene molecule in the new Cosmo Player window by clicking the desired fullerene link.
Line is the simplest representation, which is also known as wire frame.
It draws a line between each carbon atom and the atoms to which it is bonded. Licorice draws the carbon atoms as spheres and the bonds as cylinders. The difference between this and CPK, is that the sphere is made with the same size as the bond. CPK draws the carbon atoms as spheres and the bonds as cylinders. VDW draws the carbon atoms as spheres.