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