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