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