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