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