The first hand position to look at is the position in which the root of the scale is the lowest note you can play. It is shown in the above fretboard diagram. Find the root on the fourth string and position your hand so that your first finger is on that fret. The root of the scale can also be found under your third finger on the second string.
Notice the shapes made by the notes of the scale. On the left is a vertical line, all played using your first finger, and on the right is a line of three notes with the fourth note a fret higher.