<｜begin▁of▁sentence｜>### Instruction:
Given an Erdős-Rényi random graph with 10 nodes and 20 edges, can you use the CairoGraphDrawer's draw method in igraph to visualize and save the graph to an image file 'graph.png'?
### Response:
from igraph import Graph, plot
import cairo

g = Graph.Erdos_Renyi(n=10, m=20)
plot(g, 'graph.png')
<|EOT|>
