Display latest post image only from different categories

am currently query_posts to grab the latest posts thumbs and displaying them on the home page as such

[code moderated - use the pastebin for any code over the forum limit of 10 lines]

am also grabbing the title and displaying it with a hover effect over the image when mouse over using css, my question is can i display the image post from 4 different categories? like to display only the last post from these categories.

in image 1 it will always grab from category 1, image 2 from category 4, image 3 from category 2 etc ... or will i have to keep repeating this loop to get he results i need?

Thanks in advance.