Kayaalp, a 27-year-old athlete from central Turkey's Yozgat province, came first in the men's 130-kilogram (286 pounds) Greco-Roman category by beating Hungary’s Balint Lam.
The national athlete had received a silver medal at the Rio Games in 2016.
On Friday, another Turkish wrestler Taha Akgul had won a gold medal in the men's 125-kilogram (276 pounds) freestyle category by beating Azerbaijan's Jamaladdin Magomedov at the tournament.
Turkish athlete Yasemin Adar had also won a gold medal in the women's 75-kilogram freestyle category in the same tournament on Thursday.
Anadolu Agency