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