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