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