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