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