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