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