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)(17,18)(19,25)(20,23)(21,24)(22,26)(27,32)(28,30)(29,31) involution — undirected(1,2,5,8)(3,7,9,14)(4,12,11,6)(10,16,15,13)(18,23)(20,21)(24,26)(25,30)(28,29)(31,32)(1,3,5,9)(2,7,8,14)(4,10,11,15)(6,13,12,16)(18,24)(19,27)(20,21)(23,26)(25,30)(31,32)(3,9)(7,14)(10,15)(13,16)(17,19)(18,25)(20,28)(21,29)(22,27)(23,30)(24,31)(26,32) involution — undirected(19,27)(25,32)(28,29)(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.