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