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