Combine the sugar, water, orange juice, and orange zest in a saucepan.
Heat until the mixture boils, then reduce to a simmer for a thicker syrup.
Remove from heat and stir in the vanilla extract.Allow the syrup to cool, then refrigerate until cold. Toast the coconut at 350 degrees Fahrenheit for 7-8 minutes, then set aside.
Peel and slice the additional oranges.
In a large bowl, mix together the strawberries, blueberries, and grapes.
Pour the chilled syrup over the fruit.
Toss gently to combine the fruit and syrup.
Garnish the fruit salad with toasted coconut and mint leaves before serving.