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