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