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