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