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