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