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