You may only have part of the image on your screen, depending on your resolution and the size of your screen. If this is the case, scroll up-down and left-right to discover the other parts of the illustration.
The image will appear in black and white. When you place your cursor on an activity, the color (risk level) attributed to that particular activity and a label (title and risk score) will appear. When you move elsewhere, it will disappear. When you click on an activity, its color and label become permanent. If you want to clear the colors and labels, refresh your browser.
Enjoy!