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