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