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