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