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