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