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