Setting up a specific UITableViewCell Layout

Setting up a specific UITableViewCell Layout

I am trying to find the best route to setting up a custom UITableViewCell
Layout. This is the layout I am trying to achieve.
The colourful part represents an imageview. The UIImageView appears to
over hang the edges of the cell.
But from what I can gather this would actually be the whole cell. I
understand that the cell has multiple different views like content,
background but not sure how to implement this.
I have tried in IB but I think this is too custom. How do I create a cell
like this with an overhang as such and a custom layout for the cell.