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