There is a nice hike-in campsite about 1.5 miles up the Chorro Grande trail called Oak Camp. I think the other review here might be unintentionally implying that camping along the 33 is allowed. It isn't. This is from the district web page:

"Disperse camping is NOT allowed on Hwy 33, the Rose Valley Recreation Area or the Pine Mountain Recreation Area or Matilija Canyon Rd. These are Restricted Use Zones."