What type of art style is best for a book a dystopian society with suffrage and jigsaw tactics. As it shows the following passage of there society. And what type of materials would I use to sketch it as I also then progress to draw it on screen.(i would offer more but i cant)

I would either use water colors or a sketch. use darker more drab colors for your work, and then either use lots of details on the building and less on the people. this seems like a draft possibility though, so maybe just get some 2 point perspective of the landscape and/or buildings, and add some details that where/ will be in the dystopian book.