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