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