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