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