graph {
  0 [ style="filled", fillcolor="#9999ff" ];
  1 [ style="filled", fillcolor="#333399", fontcolor=white ];
  2 [ style="filled", fillcolor="#9999ff" ];
  3 [ style="filled", fillcolor="#9999ff" ];
  4 [ style="filled", fillcolor="#9999ff" ];
  5 [ style="filled", fillcolor="#333399", fontcolor=white ];
  6 [ style="filled", fillcolor="#9999ff" ];
  7 [ style="filled", fillcolor="#9999ff" ];
  3 -- 4 [ taillabel="4" ];
  3 -- 6 [ taillabel="3" ];
  3 -- 5 [ taillabel="1" ];
  0 -- 4 [ taillabel="3" ];
  0 -- 1 [ taillabel="1" ];
  0 -- 6 [ taillabel="2" ];
  0 -- 7 [ taillabel="6" ];
  0 -- 5 [ taillabel="1" ];
  0 -- 2 [ taillabel="8" ];
  4 -- 1 [ label="1" ];
  1 -- 6 [ label="1" ];
  1 -- 5 [ label="80", len=4 ];
  6 -- 7 [ label="2" ];
  7 -- 5 [ label="1" ];
  5 -- 2 [ label="1" ];
}