Latching Switch Pinout
Pins 1-2-3 form a SPDT switch, while pins 4-5-6 form a second SPDT switch. Together, controlled by the same manual actuator they produce a single DPDT switch.

The problem with this schematic other than the fact that it shows no broken contact and other than the fact it doesn't show any association between connections and switch position, is that every sensible interpretation of the horizontal arrow conflicts with the way the schematic for 123 and 456 are rotated with respect to each other.

The middle arrow indicates 2 and 5 are the common. But the schematic of 123 and 456 indicate that one of the outside pins is the common (and then it's not obvious which one actually is in that case, but I lean towards 1 and 6, but you could just as easily lean towards 3 and 4).

It's a crap diagram. When I first looked at the schematic I thought it was a SPST switch where 1-2-3 are the same node and 4-5-6 are the second node and both nodes get connected together by the switch. The only thing that make me look harder in the datasheet to see if it was "DPDT" appeared anywhere in the datasheet was the little right pointing arrow in the middle which seemed out of place with the aformentioned SPST interpretation.