Variation Monster allows you to generate a unique URL when an attribute is selected.
When a customer clicks on any attribute, a custom URL is automatically generated based on the selected variation.

Below is an image showing the section where you can enable this feature. Once enabled, it will work seamlessly.

After clicking the blue attribute then it creates this URL: http://localhost/variation-monster-pro/index.php/product/hoodie/?attribute_pa_color=blue