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