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