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