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