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