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