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