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