Stay with your vehicle as it can provide shade and has a supply of water in the radiator if necessary. It is also much easier for searchers to locate a vehicle than a person wandering in the bush. Note there are large penalties that apply to offenders. The bush is best enjoyed slowly. Sit down and watch nature at work around you.
Some cattle can be dangerous and capable of serious injury.
Locate your camp such that livestock can access the water hole you are using as it may be their only water source. Keep an eye on the weather as thunderstorms can dump large amounts of water that turn a creek into a raging flood in just hours. Do wear sensible footwear and dull clothing with long sleeves and a shady hat. The dull clothing help you blend in with nature and thus you don't attract the biting insects. Take note of the Fire Danger Boards which are usually situated on main roads entering or departing towns.