In here just follow my steps to create a bootable USB installer for your Mac. As you know that Mac OS EL Capitan is the newest version among Mac.
Therefore, you can create bootable USB for your Mac using Transmac on windows 10/7/8/8.1 here you will learn the easiest method of creating bootable USB.
In this article, I will show you How to create Bootable USB for Mac OS El Capitan on Windows using Transmac.