 Díaz Colón was raised in his hometown where he received his primary and secondary education.Díaz Colón's brother, Luis F. "Pickie" Díaz Colón, a former Head of the National Parks Company, was once the Mayor of their hometown Yabucoa.In 1968, Díaz Colón joined the Puerto Rico Army National Guard (PRARNG) as an enlisted soldier in an engineer company, while at the same time he was enrolled and attended classes at the University of Puerto Rico at Mayagüez.