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