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