The ornamental design for a displaypanel with graphicaluser interface, as shown and described.
FIG. 1 is a front view of a display panel with graphical user interface showing our new design; and,
FIG. 2 is a reference view showing the usage of the subject design in which the subject design is attached to a watch shaped mobile phone.
The dark broken lines in FIGS. 1-2 represent the display screen or portion thereof and form no part of the claimed design. The light gray broken line showing of a watch band in FIG. 2 is for the purpose of illustrating environment and forms no part of the claimed design.