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