Plot GeoDataFrame with multiple column attributes

Question

I'm using geopandas (python 3.8.2) to plot variables contained in a geodataframe. I would like to plot on a single figure, all datasets with their own colormap. The problem is that the plot shows only the last dataset, which corresponds to 'var_5' with colormap 'Reds'. Even if I set: ax = geodataframe.plot() it does not work.

Any idea ? Many Thanks!

import geopandas as gpd
import matplotlib.pyplot as plt

filename = 'myfile.geojson'
geodataframe = gpd.read_file(filename) 

cmaps = ['plasma', 'Greens', 'Blues', 'binary', 'Reds']
variables = ['var_1', 'var_2', 'var_3', 'var_4', 'var_5']

plt.rcParams['figure.figsize'] = (20, 10)
ax = plt.gca()

for i, var in enumerate(variables):
    geodataframe.plot(ax=ax, column=var, cmap=cmaps[i])

plt.show()

Edit:

After taking into account the answers, I got this image: