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