Get preview link programmatically

Hello, I’m wondering if there is a way that I can get the preview link programmatically to use on my site. Basically what I have is a post that is related to others. While viewing a post, you will be able to see the other related posts. I would like to have the preview links there so people viewing can easily get between the posts.

Thanks

https://wordpress.org/plugins/public-post-preview/