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