You can have all the switches wired to a common buss, and the relays as well. I'm assuming that's what you mean by daisy chained, (although the term daisy chain normally refers to "in series".
Let's assume all the switches have a common ground to their NO (normally open) terminal. The relays have a common positive bus connecting to one side of the relay coil. The other side of the relay coil goes to the other terminal of the switch. When the switch is closed it applies a the ground to the opposite coil terminal of the relay, causing the relay to energize. This changes the relay contacts from NO to Closed or from NC to open, depending on which contact terminals you are using or need.
Course you can flip that around and have the positive buss on the switches etc etc. Advantage of using relays is you can use thinner lighter wire from the switch to the relay coil. And also the relay can be selected for it's current carrying capacity.
Relays are not a panacea for all wiring needs. For lower current devices they many add unnecessary complexity and failure points for no real benefit. Relays can also generate an inductive kick (high voltage spike that can damage sensitive components), when the relay is deenergized. For critical apps, a diode is placed reverse bias across the relay coil to absorb the voltage spike.
