Plan out how you want to group your tools and mark the placement of hangers on the frame. Make sure your long handled implements are at the top, and your short handled ones are at the bottom. When placing hangers on the bottom, make sure they aren't exactly in line with the ones on the top. This way long handles can hang through the gaps and you'll be able to fit more of your tools on the wall.
When you’ve marked out spots for all your hangers, grab the hanger that you'd like to use and drill into the wood.