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