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)(17,18,23,27,22,24,21,28)(19,25,29,20,26,31,32,30)(1,2)(3,8)(4,6)(5,7)(9,10)(11,14)(12,13)(15,16)(18,24)(19,26)(27,28)(29,32) involution — undirected(1,3,5,4)(2,6,7,8)(10,13)(14,15)(17,19,22,26)(18,25,24,31)(20,28,30,27)(21,32,23,29)(1,4,5,3)(2,6,7,8)(10,13)(14,15)(17,20,23,31,22,30,21,25)(18,26,27,32,24,19,28,29)(9,11,12,16)(10,14,13,15)(17,21,22,23)(18,27,24,28)(19,29,26,32)(20,25,30,31)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.