How to Layout tile on the diagonal
I like creativity, diagonal does look great and I think it is worth it.
Most recent one I did was for a entryway to the front door.
We ran a darker brown 6"x6" tile normal around perimeter, then a lighter tan coloured 6"x6" and then another 2"x3" border of a different colour, and then in the field run diagonal 12"x12"
The end result was awesome, was all due to the home owners choice and style, colours of the tile.
Only point here is, if you want to go diagonal, maybe add in a border along with it.
As far as setting the tile, just lay it out like any other tile.
I like to open the door to the room and see a full tile in a straight line.
Maybe adjust it left or right a few inches so you get a equal amount of tile on the edges.
Will still end up with a bunch of little triangle cuts along the edge, is why is twice the labour and extra material .... I still think it is worth it for the look.
If it was easy, we would not call it work!