One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,11)(3,7,8,16)(4,13,14,12)(5,10,15,9)(17,18,21,25,20,24,27,23)(19,26,29,32,28,22,30,31)(1,3,5,12,6,8,15,13)(2,4,9,7,11,14,10,16)(17,19,27,30,20,28,21,29)(18,22,23,32,24,26,25,31)(1,3)(2,7)(4,10)(5,12)(6,8)(9,14)(11,16)(13,15)(18,23)(19,28)(21,27)(22,31)(24,25)(26,32) involution — undirected(1,4,5,7,6,14,15,16)(2,8,9,13,11,3,10,12)(18,24)(22,26)(23,25)(31,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.