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