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