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