One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,9)(3,10,12,16)(4,7,14,8)(6,13,15,11)(17,18,23,28,24,19,22,27)(20,29,32,21,26,30,31,25)(17,19,24,18)(20,30,26,29)(21,31,25,32)(22,27,23,28)(1,3,5,12)(2,6,9,15)(4,13,14,11)(7,10,8,16)(17,20)(18,25)(19,21)(22,31)(23,32)(24,26)(27,30)(28,29)(2,7)(4,14)(6,10)(8,9)(11,13)(15,16)(17,21)(18,26)(19,20)(22,30)(23,29)(24,25)(27,31)(28,32) involution — undirectedA 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.