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)(19,26)(20,25)(21,30)(22,23)(24,29)(27,28)(31,32)(1,2)(3,8)(4,6)(5,7)(10,11)(14,15)(18,23)(20,30)(24,26)(27,32) involution — undirected(1,3,5,6)(2,4,7,8)(9,11,13,10)(12,15,16,14)(17,19,22,29)(18,24,23,26)(20,27,30,32)(21,28,25,31)(9,12,13,16)(10,14,11,15)(17,19)(18,24)(20,27)(21,28)(22,29)(23,26)(25,31)(30,32)(1,2)(3,4)(5,7)(6,8)(17,20,22,30)(18,25,23,21)(19,27,29,32)(24,31,26,28)(1,4)(2,6)(3,7)(5,8)(17,21,22,25)(18,20,23,30)(19,28,29,31)(24,27,26,32)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.