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