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