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