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