In that picture the wheel is correct, but the plastic fender does seem to be skewed. The wheel looks off - but that's an optical illusion caused by the difference in color to the right and left of the tire. Hold a straight edge up to the picture and line it up with the tire - and it looks okay.
Back before they put adjustment marks on the swingarms (or at least before they were done well), I would use a piece of string to check wheel alignment. (Yeah - my first tool box had string, tinkertoys, a little radio with 2 wires hanging out of it, old National Geographic covers...). Anyone want to guess their uses?

Anyway - here's how you can check your wheel alignment with a piece of string...
Put the bike on the centerstand and put the front wheel where it looks perfectly straight. Tie a piece of string around a spoke on the rear wheel, take it around the back of the wheel, and then loop it from the back end around the front tire and back to where you tied it on the rear wheel. Lay it across where it first crosses the tire, and take it through the mag again. Hold onto the string to keep it snug (a second person to hold the string would be helpfull). Check that the string looks the same on both sides of the bike (check the gap at the back edge of the front tire - it should be the same on the left and right sides). If you can turn the front wheel to where the string looks the same on both sides - then the 2 wheels are tracking together.