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