Moving around with public buses (KTEL) in Milos is quite popular. Many visitors choose buses, since the distances are small and the shedules frequently.

Local buses serve some areas of the island. You can buy a ticket inside the bus.

Bus lines
Adamas → Sarakiniko
Adamas → Zefyria → Paliohori
Adamas → Achivadolimni → Provatas
Adamas → Triovasalos → Plate → Tripiti
Adamas → Pachena → Phylakopi → Pollonia

Check out the pdf with Milos routes here.