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