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