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