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