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