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