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