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