When graphing your earnings, always consider amount of hours worked should be similar from week to week. If not, yet you work roughly the same amount of hours over a month or a 3-month stretch (quarterly), then you may want to graph monthly or quarterly to obtain a more accurate reading.

Here’s a great site that generates a graph for you. Just enter your data.
If you would like to display the graph without exact dollar figures (your revenue is your own business), take the dollar amounts and multiply each one by the same amount. For example, you earned:

\$426.81

Now, multiply that by any number you like (note: I use a ridiculously high number, to show a representation but not the actual dollar figures). \$426.81 x 50 = \$21340.50 (obviously not a realistic weekly payout). Use the same number (in my case, x 50) to multiply all your figures and the graph will reflect the exact same trend as if you used the actual numbers.

Below are some screenshots showing you what fields to enter your information.

Here is the link to the site that generates your graph for you.