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