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