Follow the obvious valley by the path of least resistance, if there is not a trail to follow from the hoards of previous climbers, when you enter the south cwm, you can see the summit, the path of least resistance goes up the low angle snowfield to to right, and follows the ridge to the first false summit. From here, if it is clear, you can see the signpost on top of the real summit. If not, continue on the right side of the ridge, without falling into the abyss, until you reach the summit proper.
Gave route three stars for the stellar scenery.
Start at the Toubkal Refuges (see Toubkal region for directions there), from the doorway go left (west) till you are past the second refuge, cross a stream here on an ice/snow sheet and go uphill toward the obvious valley.
Crampons for sure, ice axe reccommended. Warm clothes, even though you are in Morocco, it may drop below 0c on the summit.
BETA PHOTO: You can see the real summit sign
BETA PHOTO: Rough drawn with Paint, standard route in green.