\documentclass[]{article}
\usepackage{pstricks}
\usepackage{pst-3d}
\pagestyle{empty}
\parindent=0pt
\begin{document}

\begin{center}
\bgroup
\psset{unit=1.5}
\begin{pspicture}(-4.5,-3.5)(2.75,4.75)
\psset{viewpoint=1 1.5 1}
\ThreeDput[normal=0 0 1]{% xy-Ebene
    \psline[linewidth=3pt,linecolor=blue]{->}(4,4)(4,5.5)
    \uput[90](4,5.5){%
        \rotateleft{\textcolor{blue}{$\vec{n}_A$}}}}
\ThreeDput[normal=0 -1 0]{%  xz-Ebene
    \psline[linewidth=3pt,linecolor=green]{->}(4,0)(5.5,0)
    \uput[90](5.5,0){%
        \psscalebox{-1 1}{\textcolor{green}{$\vec{n}_B$}}}}
\ThreeDput[normal=1 0 0]{%  yz-Ebene
    \psline[linewidth=3pt,linecolor=red]{->}(0,4)(0,5.5)
    \uput[0](0,5.5){$\vec{n}_{oben}$}} % Würfel und Achsen
\ThreeDput[normal=0 0 1](0,0,4){%
    \psframe*[linecolor=cyan](4,4)
    \rput(2,2){\Huge\textbf{OBEN}}}    
\ThreeDput[normal=0 1 0](4,4,0){%
    \psframe*[linecolor=magenta](4,4)
    \rput(2,2){\Huge\textbf{Seite A}}}
\ThreeDput[normal=1 0 0](4,0,0){%
    \psframe*[linecolor=yellow](4,4)
    \rput(2,2){\Huge\textbf{Seite B}}}
% Die kleinen Achsen
\psset{arrows=->,linewidth=1pt}
\ThreeDput[normal=0 0 1](0,0,4){%
    \psline(4,0)\uput[90](3,0){X$_{oben}$}
    \psline(0,4)\uput[0](0,3){Y$_{oben}$}}
\ThreeDput[normal=0 1 0](4,4,0){%
    \psline(4,0)\uput[90](3,0){X$_{A}$}
    \psline(0,4)\uput[0](0,3){Y$_{A}$}}
\ThreeDput[normal=1 0 0](4,0,0){%
    \psline(4,0)\uput[90](3,0){X$_{B}$}
    \psline(0,4)\uput[0](0,3){Y$_{B}$}}
\end{pspicture}
\egroup
\end{center}


\end{document}