This is just the diamond pattern flipped to the “wrong side”. This is not a beginner project, but rather for someone who has made a few friendship bracelets. Use this idea of using 1 color of floss for a different look.
This Purl Bee post only has pay patterns/kits (I felt misled after reading their post and clicking through their link to find this out and that the kits were up to $27.50).
You can google “diamond pattern friendship bracelet” or go to this Purl Bee page here for a free diamond pattern. For a huge archive of friendship bracelets of all kinds go here.