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