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