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