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