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