The basic premise of swarm kiting is gather as many mobs as possible, while not having any type of spell or attack aggro on any of the mobs. So just run by and get social aggro or proximity aggro with the mobs. So that way, once you charm one of the mobs and make it attack one of the mobs in the group, all the mobs in the "swarm" will attack your pet. Then once your pet is low on health, either time it so that your charm breaks before it dies, or invis yourself to break the pet. Then you chant (nuke) the pet down for exp. Rinse repeat.
This works well with the Ulthorks and walrus in Eastern Wastes at level 29. Level 28 it gets a little tricky because the Ulthork warriors sometimes resist the charm, and then you will end up having pets being attacked by the swarm, and also mobs with aggro chasing you so it ends up being a swarming kiting mess.
Also this works best with sow potions because having to twist in selos while trying to charm and kite and chant gets a bit hard, and if your swarm stuns you or catches up, it can get ugly fast.