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