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