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