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