DC Motor + 9 V battery + 270 ohm resistor = Nothing (Motor won't turn)
As Ignacio said, use a DPDT switch in an H-Bridge configuration. Also, you are just wasting power using resistors. Change to a 1.5V battery and you don't need a resistor.







simulate this circuit &ndash; Schematic created using CircuitLab

For a variation on your circuit, you could use two 1.5V batteries and stick with your SPDT switch:







simulate this circuit

The resistors you are using are not only wasting power, but they are also limiting the current too much so that the motor will not turn.

If you must use a 9V battery, you could use a smaller value resistor per Saidoro's suggestion and put it in series with the motor. Then either use the DPDT circuit above, or the SPDT circuit with two 9V batteries.