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