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