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