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