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