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