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