I remember doing my project and how stressful it was so I don't normally post on forums but in the absence of any other help, here goes.
Anyway, if you can get your hands on the Osbourne book, it has info on the fraud matrix on p81-82.
It's very simple. It's just a table that lists the risks and gives information about them. Headings might include 'Details of risk' which lists risks in a column on the left then going along there may be columns for 'Employees' (who might carry out the fraud), 'Collusion' (would there need to be collusion, if so who with), 'Likelihood' (of the fraud happening), and 'Impact' (on the business if it did happen). There is no set format though.
Just remember that all you are trying to do is demonstrate to the marker that you are able to identify the risk of fraud and assess its likelihood and impact.
Hope this helps,