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