Medallion Mitts Pattern Chart Help

I am working on the Medallion Mitts from the Knitting with Balls book. I finished the first mitt and the cable pattern is all twisted around the entire length of the mitt. I am wondering if I am reading the chart correctly.

It says that the chart is read from right to left, but I noticed that the number of the rows alternate from the right side to the left side. Do I knit the row from right to left on each row? or do I knit right to left, then left to right, right to left, and so on?

If anyone has made these mitts, I would appreciate some advice on reading the chart.