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