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