\documentclass[a4paper, 12pt ]{article}  
\usepackage{tikz}  
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\begin{tikzpicture}
[line cap=round,line join=round,x=1cm,y=1cm,]
\draw[-latex,color=black] (-2,0) -- (4,0);
\draw[-latex,color=black] (0,-2) -- (0,4);
     \draw[  domain=-0.2:2.5] plot(\x,{(\x-1)^3}) ;
    \draw[](2,-0.5)--(2,3);
   \node at (1.85,0.3) [ ] {\small $s$};
         \node at (0.3,-0.2) [ ] {\small $s$};
\end{tikzpicture}
\end{document}