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