Graphic recording involves taking notes with a lot of pictures. Sometimes, especially with shorter presentations, there's simply no time for a lot of pictures. A lot of pictures may not be needed, either. One large central image can be mighty powerful. And it may be all you need.
There's more than one picture in the graphic recording above. There are some musical notes, a couple of light bulbs, and some simple people at the bottom. Then there's a big face in the center, towards the top. Notice how that face really grabs your eye?
If you're pressed for time, pick one thing to draw. Draw it big and bold. That alone will make your notes or poster much more visual. That one drawing will catch people's eye and bring them into the content more than just words alone.