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