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