How to increase node spacing for networkx.spring_layout

Drawing a clique graph with

import networkx as nx
....
nx.draw(G, layout=nx.spring_layout(G))

produces the following picture:

Obviously, the spacing between the nodes (e.g., the edge length) needs to be increased. I've googled this and found this suggestion here:

For some of the layout algorithms there is a scale parameter that might help. e.g.

import networkx as nx
G = nx.path_graph(4)
pos = nx.spring_layout(G)  # default to scale=1
nx.draw(G, pos)
pos = nx.spring_layout(G, scale=2)  # double distance between all nodes
nx.draw(G, pos)

However, the scale parameter does not seem to have any effect.

What is the right method to get a better drawing?