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