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