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