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