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