Hi Rakshith, you are looking at very straightforward replacement.
You only need to worry about marking the beige / off white wire connected to COM terminal, it will connect to any of the C terminals on your Rachio controller.
Red through Blue wires connected to terminals 1 through 5 should also be connected to numbered terminals on the rachio controller, but the order / station number is not important. During the setup you’ll be able to name / identify them with more detail rather then just their number.
Black power cable connected to 24VAC and the power supply it connects to should be moved / donated with the old controller, The white sensor jumper wire can be disreguarded / kept with old controller as well (rachio will not require it).
