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