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