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