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