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