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