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