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