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