The 32-year-old actress spent time with the 49-year-old actor and his daughter Hania on Friday after welcoming Maya with husband Yaron Versano in March.
"When we aren't playing superheroes... All love," Vin Diesel captioned a photo on Facebook of himself with Gadot and their respective daughters.
Gadot and Vin Diesel co-starred as Gisele and Dominic in Fast & Furious, Fast Five and Fast & Furious 6. The actress thanked Vin Diesel for his support after presenting the actor with the MTV Generation Award in May.
"You gave me my 1st chance in the film world. I am so grateful. I was SO happy to present this to u. Well deserved #fastandfurious @vindiesel," she tweeted.
Gadot gave birth to Maya on March 19, and also shares 5-year-old daughter Alma with Versano. She told News Corp Australia in May that her daughters influenced her decision to star in Wonder Woman.
"This is so important that finally we are going to have a strong female figure, not only for girls, but also for boys," the star said.
"People talk about women empowerment but you can't empower without educating," she added. "And personally, as a mother of two daughters, I am just thrilled that finally it's happening. I am hoping that there will be more strong female figures."
Vin Diesel shares Hania with his longtime partner, Mexican model Paloma Jimenez. The couple are also parents to 6-year-old son Vincent and 2-year-old daughter Pauline.