First make sure the permissions are set accordingly to how you want them shown in Google Drive

1. Navigate to the page you want to place the Google Drive Folder on your Web Site
2. Select Insert (Right of Page Menu)
3. Choose Drive Folder
4. Click the Gear to Display as List View or Grid View (see below for examples and best practices)
5. Drag the Folder or Resize to how you like it on the Page
6. Click Publish

Always check your publishing in an Incognito Windows if it needs to be public on the Web or to anyone who sees the page - YOU MUST ALSO change the sharing settings in Google Drive to the Folder.