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