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