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)(17,18,23,26)(19,24,21,22)(20,25,29,32)(27,31,30,28)(33,34,39,43)(35,36,44,40)(37,41,45,48)(38,42,47,46)(1,3,5,10)(2,6,7,13)(4,9,12,16)(8,14,11,15)(17,19,23,21)(18,24,26,22)(20,27,29,30)(25,31,32,28)(33,35)(34,40)(36,43)(37,38)(39,44)(41,46)(42,48)(45,47)(2,7)(6,13)(8,11)(14,15)(19,21)(22,24)(27,30)(28,31)(37,45)(38,47)(41,48)(42,46) involution — undirected(1,2)(3,6)(4,8)(5,7)(9,14)(10,13)(11,12)(15,16)(17,20,23,29)(18,25,26,32)(19,27,21,30)(22,28,24,31)(33,36,39,40)(34,35,43,44)(37,46,45,42)(38,41,47,48)(1,3)(2,6)(4,9)(5,10)(7,13)(8,14)(11,15)(12,16)(17,21,23,19)(18,22,26,24)(20,27,29,30)(25,31,32,28)(33,37)(34,41)(35,38)(36,42)(39,45)(40,46)(43,48)(44,47)(1,4,5,12)(2,8,7,11)(3,9,10,16)(6,14,13,15)(17,22)(18,19)(20,28)(21,26)(23,24)(25,27)(29,31)(30,32)(33,38)(34,42)(35,37)(36,41)(39,47)(40,48)(43,46)(44,45)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.