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