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