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