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