Powers of a primitive root

n = 2 Prime[5];
p = PrimitiveRoot[n];
{n, p}

{22, 13}

Graph[Table[PowerMod[p, k, n] -> PowerMod[p, k + 1, n], {k, EulerPhi[n]}], DirectedEdges -> True, VertexLabels -> Placed["Name", Center], VertexSize -> 0.4, VertexStyle -> LightOrange]

Graph[<10>, <10>]