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