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