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