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