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