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