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