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