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