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