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