As there is no real nice transit diagram of the S-Bahn Vorarlberg I decided to make one. I know the S2 is not yet official but I have chosen to include it
Where should I travel with my SBB Day Pass?
Finalisierung NEAT: Mehr Züge nach Mailand und München sowie schweizweit bessere Angebote [aktualisiert] - Bahnonline.ch
S1 (St. Gallen S-Bahn) - Wikiwand
SBB to continue operating German regional services
S bahn train hi-res stock photography and images - Alamy
Switzerland Train Guide - How To Use The Swiss Rail Network - Guide To Backpacking Through Europe | The Savvy Backpacker
Network maps for the Zürcher Verkehrsverbund – ZVV
Zürich–Winterthur railway - Wikipedia
Trasse Schweiz: A key player in the Swiss rail sector
S-Bahn: Schienenersatzverkehr zwischen Altenburg und Werdau am Wochenende