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