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