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