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