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