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)(22,29)(23,28)(25,31)(33,34)(35,42)(36,40)(37,45)(38,41)(39,43)(44,47)(46,48)(1,3,5,11)(2,6,7,15)(4,13,14,10)(8,16,12,9)(17,18)(19,22)(20,28)(21,24)(23,27)(25,32)(26,29)(30,31)(17,19,21,26)(18,22,24,29)(20,25,27,31)(23,30,28,32)(33,35)(34,39)(36,43)(37,46)(38,44)(40,47)(41,48)(42,45)(2,7)(6,15)(8,12)(9,16)(17,20,21,27)(18,23,24,28)(19,25,26,31)(22,30,29,32)(33,36,38,37)(34,40,41,45)(35,43,44,46)(39,47,48,42)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.