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