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