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