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