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