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)(11,15,16,13)(17,18,22,20)(19,27,29,25)(21,24,26,23)(28,31,32,30)(2,6)(7,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,29)(18,25,20,27)(21,28,26,32)(23,31,24,30)(1,3,5,4)(2,7,6,8)(10,14)(11,16)(17,20,23,21,22,18,24,26)(19,28,30,27,29,32,31,25)(1,4,5,3)(2,8,6,7)(10,14)(13,15)(17,21,23,18,22,26,24,20)(19,27,30,32,29,25,31,28)(2,6)(7,8)(10,14)(13,15)(18,20)(21,26)(25,27)(28,32) 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.