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)(20,24)(21,31)(22,25)(23,29)(27,28)(30,32)(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)(17,19,21,29,22,30,20,28)(18,23,24,26,25,27,31,32)(3,8)(6,7)(10,11)(14,15)(17,18)(19,27)(20,31)(21,24)(22,25)(23,30)(26,28)(29,32) involution — undirected(9,12,13,16)(10,14,11,15)(17,20,22,21)(18,24,25,31)(19,28,30,29)(23,26,27,32)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.