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