\documentclass{article}
\usepackage{pst-coxeterp,multido}
\usepackage[a4paper]{geometry}
\pagestyle{empty}
\begin{document}
\psset{unit=2,sizeVertices=0.05,sizeCenters=0.05,linewidth=0.75\pslinewidth}
\multido{\i=2+1}{24}{%
\begin{center}
\begin{pspicture}(-2.5,-2.5)(2.5,2.5)
\psframe*(-2.5,-2.5)(2.5,2.5)
\psframe[linecolor=red,linewidth=0.05](-2.5,-2.5)(2.5,2.5)
\gammaptwo[P=\i,linecolor=white]%
\rput(0,-2.3){\texttt{\white P=\i}}
\end{pspicture}
\end{center}\newpage}

\end{document}
