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