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)(17,18,22,20)(19,25,26,32)(21,30,27,24)(23,31,29,28)(1,3,5,8)(2,6,4,7)(9,11,13,10)(12,14,16,15)(19,26)(23,29)(25,32)(28,31)(1,2,5,4)(3,6,8,7)(10,11)(12,16)(17,19,27,31,22,26,21,28)(18,23,30,32,20,29,24,25)(1,4,5,2)(3,6,8,7)(9,12,13,16)(10,14,11,15)(17,20,22,18)(19,23,26,29)(21,30,27,24)(25,31,32,28)(10,11)(14,15)(18,20)(23,29)(24,30)(25,32) involution — undirectedA 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.