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