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