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