Option 1: Fold it in half, so that you can cut it with a 24” ruler.
Start by folding the fabric in half matching the selvedge edges. Then pick the fabric up holding it just by the selvedge edges. If the grain on both layers is aligned, the fabric will drape smoothly.
If the grain is out of alignment, the fabric will twist a little and not hang smoothly. You can adjust the top layer back and forth against the bottom layer until you eliminate any twists in the fabric.
Once you get the fabric to hang smoothly, keep the selvedge edges aligned, lay it on your cutting mat and finger press the folded edge.
Option 2: Fold it twice, so that you can cut it with a 12" ruler.
You can fold the fabric again by aligning the folded edge with the selvedge edges. You’ll have four layers of fabric to manage. Many quilters do this but if you don’t get all four layers aligned accurately, your strips will come out with a slight “V” in it and will be unusable.