Matt Damon
How was this achieved:
Looking at the groups connnected by red we get JASNO, which is an anagram for Jason.
Looking at the green we get BUNOER which anagrams to Bourne.
Matt Damon famously played Jason Bourne.
Maroon appears to anagram to Operation.
And Blue anagrams to Treadstone (thanks to Gordon K). Don't anagram all loosey goosey kids
How the graph works:
Anagrams are formed from the colour groupings. The colors have a node which is the circle, it is unique to that colour. Then then lines out from that color's node indicate the number of time the letter pair at the end (that isn't the node) appear in the anagram.