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