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