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