The idea for this graph I have taken from a GeoGebra worksheet; it exists under several authors: [1], September 17, 2018; [2], February 10, 2019. Bright design in German (.html). Funky version with both spirals in one single path (.html)
You can save your drawing via right clicking your mouse over the image as a PNG or:
This may take a while.
Note that HTML Canvas and SVG can render differently, esp. when a fill-color is in play.