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