Do you have the MOST recent BIOS version installed for your motherboard? If so, then that is what you are stuck with. Being UEFI has very little to do with the "look" of the BIOS interface and is mostly relevant only to the hardware level support for UEFI partitions and firmware support. On laptops, even more so. They can only use X amount of data to flesh out the interface and using fancy graphics takes up space on the BIOS ROM that might be needed for adding support for other things like firmware, hardware, CPU microcode, additional options, etc.
It has nothing to do with your graphics adapter.