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