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