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