Preheat the oven to 350 F. In a large bowl, whisk together cake mix, eggs, and vegetable oil until smooth. Fold in the sprinkles. In a shallow dish, combine granulated sugar and ground cinnamon.
Roll the cookie dough into a balls, and roll each one into the cinnamon sugar mixture. Place the cookies onto a large ungreased baking sheet. Bake for 10-12 minutes.