I have flown it before. The approach brings aircraft in at an angle from the right. The localizer crosses the extended centerline at the point where the localizer meets the glideslope MDA. This particular ILS is offset because aligning the localizer directly with the centerline would have required putting the localizer in a saltwater marsh at the far end of the runway (04L) which is a protected wetland.
Therefore, the localizer antenna is located to the left of runway 22R, just beyond the intersection of runway 31L/13R
There is a note about the offset on the approach chart.
