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