One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,7)(3,9,11,16)(4,12,14,8)(6,13,15,10)(20,27)(22,28)(23,30)(25,31)(33,34)(35,38)(36,39)(37,40)(41,44)(42,45)(43,46)(47,48)(1,3,5,11)(2,6,7,15)(4,13,14,10)(8,16,12,9)(17,18)(19,22)(20,23)(21,24)(25,29)(26,28)(27,30)(31,32)(33,35,37,43)(34,38,40,46)(36,42,44,48)(39,45,41,47)(17,19)(18,22)(20,25)(21,26)(23,29)(24,28)(27,31)(30,32)(34,39)(36,44)(38,45)(40,41)(42,48)(46,47) involution — undirected(2,7)(6,15)(8,12)(9,16)(17,20,21,27)(18,23,24,30)(19,25,26,31)(22,29,28,32)(34,40)(38,46)(39,41)(45,47)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.