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