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