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