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