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