Maybe you want to use AWS-PlantUML instead.
Inspired by plantuml-icon-font-sprites I downloaded
AWS Simple Icons, extracted, and made .puml files.
Both resized images and plantuml sprites are available.
!define AWS_SPRITESPATH https://raw.githubusercontent.com/jballe/plantuml-aws-icons/master/sprites
!includeurl AWS_SPRITESPATH/compute/ec2.puml
For each icon there is defined variables for three images, a greyscale and a color version, and a block and what., All resized to 48x48 pixels.
component "s3 b/w \nAWSIMG_S3BUCKET_B" as bucket_b
component "s3 gray \nAWSIMG_S3BUCKET_G" as bucket_g
component "S3 color \nAWSIMG_S3BUCKET_C" as bucket_c
There is also defined a plantuml native sprite based on the black and white image.
component "s3 sprite \n<$s3bucket>" as bucket