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