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