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