Android does not allow you to create folders within the App Drawer. Apps will appear in the order you install them, or in an alphabetical order.
However, you can group similar apps into a folder on your Homescreen(s). To do this, follow these steps-
Long press on the app you want to create a folder for and drag it to the homescreen.Long press on another app of same category, or the one you want to place in the same folder, and drag it on the previous app.Repeat the same procedure for all the apps to be placed in a single folderOnce done, Tap on the the group you just created, Tap on Unnamed Folder, Type in the name for the folder and Tap Done.Follow the same procedure to create another folder.