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