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