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