gh-36397: Fix element labeling in `OperationTable.color_table`
The labels were transposed.
Fixes https://ask.sagemath.org/question/73752/typo-in-operationtable/
### :memo: Checklist
- [x] The title is concise, informative, and self-explanatory.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.
- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation accordingly.
URL: https://github.com/sagemath/sage/pull/36397
Reported by: Ricardo Buring
Reviewer(s): Marc Mezzarobba
