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