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