@punithjigali here are some of the custom visualizations that you can check out:
Network Topology - Custom Visualization: https://splunkbase.splunk.com/app/3762/
Flow Map Viz: https://splunkbase.splunk.com/app/4657/
3D Graph Network Topology Visualization: https://splunkbase.splunk.com/app/4611/
Force Directed App: https://splunkbase.splunk.com/app/3767/
If you want to build your own, you can try out Splunk Custom Visualization API and integrate your visualization source code.