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