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