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