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