Here's a spec you might try out:http://us.battle.net/d3/en/calculator/barbarian#WfXYVk!fbe!aZaZab
It's what I use, but I've modified it for your level (I'm 60 in Inferno).
The basic strategy is to kite and use weapon throw--with the No Escape passive you should be able to keep a good amount of fury going. When you do run out of fury, you can run in and stun with ground stomp and get off a couple of swings of Frenzy (or Cleave, if you prefer). The most important factor about Weapon Throw, though, is that it snares the targets by 60%, and with the run Ricochet, it will hit and snare 3 targets--which is usually the amount of mobs you'll be dealing with.
I prefer to save Leap for when I'm trouble and need to get out in a hurry. That in combination with Ground Stomp and the snare from Weapon Throw you should be able to kite efficiently enough. I myself still encounter certain elites that I just can't handle and I simply have to avoid them or try a new location if that's not possible.
Stats you'll want to stack are Vitality (for the Nerves of Steel passive) and strength, obviously. All resistances is very nice as well, if you can find the gear.