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