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