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