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