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)(19,26)(20,28)(22,30)(23,24)(27,31)(29,32)(1,3)(2,6)(4,7)(5,8)(9,10)(11,13)(12,15)(14,16)(17,18)(19,27)(20,24)(21,25)(22,29)(23,28)(26,31)(30,32) involution — undirected(1,4,5,2)(3,7,8,6)(9,11,13,10)(12,15,16,14)(17,19,28,32,21,29,20,26)(18,22,23,31,25,27,24,30)(3,8)(6,7)(10,11)(14,15)(17,18)(19,22)(20,24)(21,25)(23,28)(26,30)(27,29)(31,32) involution — undirected(9,12,13,16)(10,14,11,15)(17,20,21,28)(18,23,25,24)(19,26,29,32)(22,31,27,30)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.