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