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