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