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