Preheat the oven to 350°F (175°C).
Grease four 6-inch round pans with nonstick spray.
Mix the wet ingredients: In a large bowl, beat the softened butter, strawberry preserves, and sugar together with an electric mixer on medium speed until light and fluffy. Add the eggs one at a time, mixing well after each addition. Then, beat in the strawberry extract.
Prepare the dry ingredients: In a separate medium bowl, sift together the cake flour, baking powder, salt, and baking soda.
Combine wet and dry ingredients: Gradually add the dry ingredients to the butter mixture, alternating with the buttermilk. Mix until just combined. Stir in the food coloring until the batter is evenly tinted.
Divide and bake: Evenly distribute the batter among the prepared cake pans. Bake for 20 to 25 minutes, or until a toothpick inserted into the center comes out clean.
Cool the cakes: Let them cool in the pans for 10 minutes before carefully removing them. Transfer to wire racks and allow them to cool completely before frosting.