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