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