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