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