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