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