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