<｜begin▁of▁sentence｜>### Instruction:
Given a NetworkX Petersen graph, how can you generate and visualize node positions using Graphviz's 'dot' algorithm?
### Response:
import networkx as nx
import matplotlib.pyplot as plt

# Create a graph
g = nx.petersen_graph()

# Generate positions for the graph nodes using Graphviz
positions = nx.nx_agraph.graphviz_layout(g, prog='dot')

# Draw the graph
nx.draw(g, positions, with_labels=True)
plt.show()
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