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