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