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