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