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)(17,18,23,21)(19,22,26,24)(20,27,30,28)(25,32,31,29)(1,3)(2,5)(4,8)(6,7)(10,13)(11,15)(17,19)(18,24)(20,28)(21,22)(23,26)(25,29)(27,30)(31,32) involution — undirected(9,10)(11,14)(12,13)(15,16)(17,20,23,30)(18,25,21,31)(19,27,26,28)(22,29,24,32)(3,8)(5,7)(10,13)(14,16)(17,21,23,18)(19,22,26,24)(20,25,30,31)(27,32,28,29)(9,11,12,15)(10,14,13,16)(17,22,23,24)(18,26,21,19)(20,29,30,32)(25,28,31,27)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.