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