Preheat the oven to 350°F (175°C). Grease and flour an 8-inch round cake pan.
In a medium bowl, whisk together the all-purpose flour, baking powder, and salt.
In a large bowl, combine the granulated sugar and vegetable oil. Whisk until well combined.
Add the eggs to the sugar and oil mixture one at a time, beating well after each addition.
Stir in the vanilla extract.
Alternately add the dry ingredients and the milk to the wet ingredients, beginning and ending with the dry ingredients. Mix until just combined; do not overmix.
Pour the batter into the prepared cake pan and smooth the top with a spatula.
Bake in the preheated oven for 28 to 32 minutes, or until a toothpick inserted into the center comes out clean.
Remove the cake from the oven and let it cool in the pan for 10 minutes.
Turn the cake out onto a wire rack and allow it to cool completely before frosting or serving.