This plugin provides a utility that converts the mxgraph format used by draw.io into the canvas scene graph:

import { parseMxgraphDataToSerializedNodes } from '@infinite-canvas-tutorial/drawio';

const nodes = await parseMxgraphDataToSerializedNodes(
    '<mxGraphModel dx="1422"...',
);
api.runAtNextTick(() => {
    api.updateNodes(nodes);
});