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