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