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