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