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