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