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