When depicted together, Vajradhara and his consort are seated in sexual embrace. Normally, his arms are crossed over her back and he holds the usual attributes (vajra and ghanta) while she holds a vajra and a skull cup.
As always, the consort/mother/shakti is much smaller than her partner.
This sculpture shows him with his hands away from her back.
On paintings, their bodies may have different colours and they may hold different attributes. The above sculpture shows her holding a skull cup and a flaying knife.