Hi hemantsindkar,
The Model Based Design Toolbox for S32K has been tested with Matlab releases starting with 2015b to 2017a
We usually support the last 4 Matlab releases - since Mathworks is constantly changing code generation with various improvements that sometimes breaks the backward compatibility.
Nonetheless, in case you can't update to a newer version there is a way to make the 2013b release to work with S32K.
In this particular case the problem is cause by the Code Replacement Library that is set to NONE. All you have to do is to open the Simulink model and go to Model Configuration Parameters -> Code Generation -> Interface and there on the Code Replacement Library options to choose an ARM Cortex type.

This will allow you to build the models.
Anyhow - please be aware that you might run into other potential issues (we will try to support you as much as we can) by staying with Matlab 2013b release.
Hope this helps!
Daniel