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