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