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