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