The schematic has nothing to do with the physical description of the chip. You have to be a little careful, as semiconductor chips are often available in several very different package styles. You have to make sure you are connecting the right pin to the right function on your project.
In the case of the LM555, you are in luck, though. They all use a 8 pin rectangular package, where pin 1 is ALWAYS the one next to the small dot, or if there is not small dot, the pin to the left of the little horseshoe indentation when viewing the chip from the top.