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