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