This was a particularly simple design (really the base of other more complex illustrations) drawn on page 9 of Sutton’s book. The construction method there uses the traditional circles, but that seems like a very complex way to draw this
Really it’s just circles in squares and some 45 degree angles…
I made and painted a few of these, but this one I tried to paint half in one colour and one in another
Looks ok but not sure about this half ‘n half approach.