documentclass[tikz,border=3.14mm]{standalone}
usepackage{tikz-3dplot}
begin{document}
tdplotsetmaincoords{60}{110}
begin{tikzpicture}[tdplot_main_coords,>=stealth,declare function={%
pfft(x)=pi+0.3*sin(deg(x));}]
 draw[->] (0,0,0) coordinate (O) -- (5,0,0) coordinate(X) node[pos=1.1]{$x$};
 draw[->] (O) -- (0,5,0) node[pos=1.1]{$y$};
 draw[->] (O) -- (0,0,5) node[pos=1.1]{$z$};
 path[opacity=0.3,left color=blue,right color=blue,middle color=blue!20,shading
  angle=72]
   plot[variable=x,domain=0:1.1*pi,smooth] (3,x,{pfft(2*x)}) --
   plot[variable=x,domain=1.1*pi:0,smooth] (0,x,{pfft(2*x)}) -- cycle;
 path[opacity=0.3,left color=blue,right color=blue,middle color=blue!20,shading
  angle=72]
   plot[variable=x,domain=1.1*pi:2.2*pi,smooth] (3,x,{pfft(2*x)}) --
   plot[variable=x,domain=2.2*pi:1.1*pi,smooth] (0,x,{pfft(2*x)}) -- cycle;
 draw plot[variable=x,domain=0:2.2*pi,smooth] (3,x,{pfft(2*x)}) --
 plot[variable=x,domain=2.2*pi:0,smooth] (0,x,{pfft(2*x)}) -- cycle;
end{tikzpicture}
end{document}