Not exactly - although it's easy to understand why you might have that impression.
The Liberal and National Party's are virtually identical when it comes to policy. The only reason they are not the same party (and they are in part of the country) is that the Nationals generally represent rural constituencies, and worry that if they merged with the Liberals, the interests of rural voters would become less visible in a city-dominated Liberal-National Party. National voters are probably more conservative on average than Liberal voters but the parties are pretty much the same.
Both parties have a conservative core, but have some members towards the centre. Labor has a generally socialist core, but again, some members towards the centre. The Greens are heavily left, virtually universally. There are other more minor parties that only hold a handful of seats and they are all over the place.
Thanks for your perspective, very interesting info. I will think of them as right center and left center, arrived at by by respecting the prevailing sentiment of their core voters. In a coalition government this would seem to me to qualify umm or classify the Nationals as a supporting conservative party and the Liberals as a supporting progressive party.