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