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