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