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