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