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