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