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