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