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