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