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