Hi,
you can do that using custom styles with the CSS Editor node. Please have a look at my post here: How to remove / change size of marks in Line Plot (Plotly). Instead of changing the color of dots, you have to find the class of the axis labels and then use the transform: rotate() CSS style to rotate the labels. However, this will probably lead to other problems, as there is not enough horizontal space for the rotated labels. For custom visualizations, I recommend the Generic JavaScript View node, you have to write your own JavaScript code, though.
Kind regards,
Alexander