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