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