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