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)(11,15)(12,14)(13,16)(17,18,23,21,22,25,32,31)(19,24,27,26,20,28,30,29)(1,3)(2,5)(4,8)(6,7)(11,16)(13,15)(17,19)(18,24)(20,22)(21,26)(23,27)(25,28)(29,31)(30,32) involution — undirected(2,6)(3,8)(9,11,12,16)(10,13,14,15)(17,20,22,19)(18,24,25,28)(21,26,31,29)(23,30,32,27)(2,6)(3,8)(10,14)(13,15)(17,21,23,25,22,31,32,18)(19,26,27,28,20,29,30,24)(2,6)(5,7)(19,20)(24,28)(26,29)(27,30) 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.