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