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