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