This isn’t a physical keyboard. The layout is just a mapping in software. The arrows are unchanged, so they’re not included in the diagram. Whether they actually appear on your keyboard is a separate question.

Not all keyboard layouts use arrows.

Long time ago keyboards did not have arrows. Nowadays, some keyboards use function key to switch some keys to their alternative function, including arrows. This is true especially with 40% keyboards where there is just no real estate for arrows and to some extent with 60% keyboards.