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